Data collected from 800 school athletes show that 350 of them stretched before exercising and the...

Data collected from 800 school athletes show that 350 of them stretched before exercising and the rest did not.

Among these 350, 80 suffered an injury last year. Among the remaining athletes who did not exercise, 150 got injured last year.

a) Form the contingency table.

b) What is the risk of getting injured if you do not stretch?

c) What is the relative risk of getting injured if you stretch in comparison to if you do not?

d) What are the odds of getting injured if you stretch?

e) Do the hypothesis testing to establish if the relationship between stretching and getting injured is statistically significant or not.

1. State the hypothesis.

2. Make the expected counts table.

3. Calculated the Chi-squared test statistic. What is the conclusion?

4. Find the p-value. What is the conclusion?

5. Make a final decision about the relationship between stretching and injuries.

Expert Solution

orchestra answered 2 years ago

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